The 'Mysterious Girl' singer and trainee doctor Emily welcomed their first child together, adorable Amelia, in January 2014.
In the latest issue of Fabulous magazine, loved up new dad Peter said he was "so happy" in life right now.
"In this relationship, I can't see anything bad. It's all going so wonderfully. This is just a completely different relationship and it really works. Someone said, 'Aren't you going to be bored?' I'm anything but.
"I go home, we put on documentaries, cook, hang out, go for dinner… And although Amelia wasn't planned, she solidified that relationship. It's like consummating a marriage. It's a way of making it real. I love our relationship. We've gone from strength to strength."
Shortly after Amelia's birth, Peter told Reveal: "Did we plan the pregnancy? No. Was it slightly foolish? Perhaps, but the point is that I always knew Emily was the person I wanted to spend the rest of my life with."
Peter proposed to Emily before the birth of their child but, although he's spoken out about possible wedding plans, he says there is no rush to tie the knot.
The couple's main priority going forward - apart from Amelia - is Emily completing her medical degree.
She'll return to university in September to finish her course and by January she'll be a qualified doctor. Peter, meanwhile, will embark on a tour in support of his new album later this year.
"Of course, we've discussed a wedding, but I think that two years after the engagement is right," Peter told Fabulous. "We're solid, we're happy, she's got to finish uni. So why rush?"
Peter and Emily celebrated their second anniversary on 17 July.
Peter told Reveal earlier this year: "I wanted to be engaged before the baby was born. In fact, I'd have loved to be married before the baby was born. I'm quite traditional and by the traditions set by my mum and dad, you get married and then have kids.
"I know it doesn't always work like that, especially these days – but at least we're engaged now and Emily's my fiancée, not my girlfriend. It feels nice."
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Stars who welcomed babies in 2014:
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